Texture paint settings 2.8
I'm not sure if I understand what you are looking for.

What I figured out is, there are not many preinstalled settings but you can create numerous own.




Open the brush setting with the tools button (2)
Create a new (default) brush withe current settigns (1)
Select out of all created brushes (3)


When converting a 2.79 blender file to 2.80, existing brush settings (at least some) are taken over.